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Finding the Fourth Proportional to 586,583.91, 809,485.80 and 318,311.91

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Solution

The fourth proportional to 586,583.91, 809,485.80 and 318,311.91 is: 439,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,583.91 : 809,485.80 = 318,311.91 : x
  2. Step 2: Convert to fraction form
    586,583.91/809,485.80 = 318,311.91/x
  3. Step 3: Cross multiply
    586,583.91x = 809,485.80 × 318,311.91
  4. Step 4: Simplify right side
    586,583.91x = 257,668,971,115.88
  5. Step 5: Solve for x
    x = 257,668,971,115.88/586,583.91
  6. Step 6: Final answer
    x = 439,270.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.